test_vmrghb_1:
  #_ REGISTER_IN v3 [00010203, 04050607, 08090A0B, 0C0D0E0F]
  #_ REGISTER_IN v4 [10111213, 14151617, 18191A1B, 1C1D1E1F]
  vmrghb v5, v3, v4
  blr
  #_ REGISTER_OUT v3 [00010203, 04050607, 08090A0B, 0C0D0E0F]
  #_ REGISTER_OUT v4 [10111213, 14151617, 18191A1B, 1C1D1E1F]
  #_ REGISTER_OUT v5 [00100111, 02120313, 04140515, 06160717]

test_vmrghb_2:
  #_ REGISTER_IN v3 [F0F1F2F3, F4F5F6F7, F8F9FAFB, FCFDFEFF]
  #_ REGISTER_IN v4 [00010203, 04050607, 08090A0B, 0C0D0E0F]
  vmrghb v5, v3, v4
  blr
  #_ REGISTER_OUT v3 [F0F1F2F3, F4F5F6F7, F8F9FAFB, FCFDFEFF]
  #_ REGISTER_OUT v4 [00010203, 04050607, 08090A0B, 0C0D0E0F]
  #_ REGISTER_OUT v5 [F000F101, F202F303, F404F505, F606F707]
